修改内核路径

hc

2024-05-14 bedbef8ad3e75a304af6361af235302bcc61d06b

 kernel/arch/nios2/include/asm/pgtable.h
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@@ -22,7 +22,6 @@
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 #include <asm/tlbflush.h>
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 #include <asm/pgtable-bits.h>
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-#define __ARCH_USE_5LEVEL_HACK
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 #include <asm-generic/pgtable-nopmd.h>
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 #define FIRST_USER_ADDRESS	0UL
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@@ -100,12 +99,8 @@
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  */
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 static inline void set_pmd(pmd_t *pmdptr, pmd_t pmdval)
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 {
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-	pmdptr->pud.pgd.pgd = pmdval.pud.pgd.pgd;
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+	*pmdptr = pmdval;
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 }
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-
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-/* to find an entry in a page-table-directory */
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-#define pgd_index(addr)		(((addr) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
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-#define pgd_offset(mm, addr)	((mm)->pgd + pgd_index(addr))
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 static inline int pte_write(pte_t pte)		\
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 	{ return pte_val(pte) & _PAGE_WRITE; }
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@@ -113,7 +108,6 @@
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 	{ return pte_val(pte) & _PAGE_DIRTY; }
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 static inline int pte_young(pte_t pte)		\
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 	{ return pte_val(pte) & _PAGE_ACCESSED; }
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-static inline int pte_special(pte_t pte)	{ return 0; }
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 #define pgprot_noncached pgprot_noncached
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@@ -167,8 +161,6 @@
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 	pte_val(pte) |= _PAGE_DIRTY;
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 	return pte;
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 }
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-
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-static inline pte_t pte_mkspecial(pte_t pte)	{ return pte; }
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 static inline pte_t pte_mkyoung(pte_t pte)
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 {
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@@ -232,7 +224,6 @@
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 	pte_val(null) = (addr >> PAGE_SHIFT) & 0xf;
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 	set_pte_at(mm, addr, ptep, null);
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-	flush_tlb_one(addr);
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 }
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 /*
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@@ -241,27 +232,17 @@
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  */
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 #define mk_pte(page, prot)	(pfn_pte(page_to_pfn(page), prot))
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-#define pte_unmap(pte)	do { } while (0)
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-
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 /*
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  * Conversion functions: convert a page and protection to a page entry,
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  * and a page entry and page directory to the page they refer to.
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  */
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 #define pmd_phys(pmd)		virt_to_phys((void *)pmd_val(pmd))
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 #define pmd_page(pmd)		(pfn_to_page(pmd_phys(pmd) >> PAGE_SHIFT))
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-#define pmd_page_vaddr(pmd)	pmd_val(pmd)
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-#define pte_offset_map(dir, addr)			\
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-	((pte_t *) page_address(pmd_page(*dir)) +	\
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-	 (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
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-
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-/* to find an entry in a kernel page-table-directory */
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-#define pgd_offset_k(addr)	pgd_offset(&init_mm, addr)
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-
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-/* Get the address to the PTE for a vaddr in specific directory */
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-#define pte_offset_kernel(dir, addr)			\
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-	((pte_t *) pmd_page_vaddr(*(dir)) +		\
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-	 (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
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+static inline unsigned long pmd_page_vaddr(pmd_t pmd)
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+{
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+	return pmd_val(pmd);
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+}
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 #define pte_ERROR(e) \
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 	pr_err("%s:%d: bad pte %08lx.\n", \
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@@ -289,10 +270,6 @@
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 #define __pte_to_swp_entry(pte)	((swp_entry_t) { pte_val(pte) })
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 #define kern_addr_valid(addr)		(1)
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-
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-#include <asm-generic/pgtable.h>
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-
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-#define pgtable_cache_init()		do { } while (0)
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 extern void __init paging_init(void);
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 extern void __init mmu_init(void);